Kendall scored 70 points on her math test. Her teacher allowed her to retake the test. She scored 98 points on the second test. What was the percentage of the increase?
A
30%
B
28%
C
40%
D
22%
To find the percentage increase, we need to calculate the difference between the two scores and then divide that difference by the original score.
The difference between the two scores is 98 - 70 = 28.
The percentage increase is (28/70) x 100 = 40%.
Therefore, the correct answer is C) 40%.